Question 19M.3.SL.TZ2.15
| Date | May 2019 | Marks available | [Maximum mark: 4] | Reference code | 19M.3.SL.TZ2.15 |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Explain | Question number | 15 | Adapted from | N/A |
Explain how food conversion ratios in livestock affect the amount of food for human consumption.
[4]
a. «food conversion ratio is» mass of animal food required to produce a certain product «in livestock» ✔
b. product may be consumable meat / milk / eggs ✔
c. some dietary choices are more sustainable than others
OR
maximum production of human food for little animal feed is desired ✔
d. some animals are more efficient at converting feed into useful product than others. ✔
e. amount of biomass lost affects this ratio ✔
f. some animal feeds will be better for producing useable products than others ✔
Accept examples for any of these marking points.
Candidates showed poor understanding of food conversion rates. There were a lot of irrelevant answers, but candidates often picked up some marks for mentioning energy losses and loss of biomass.
